The Victron Orion-Tr Smart 24/24-17A is a non-isolated DC-DC battery charger for 24V to 24V charging in vehicles, boats and off-grid systems. It outputs up to 17A (400W) and is configured over Bluetooth using the VictronConnect app, which makes it a practical choice for dual-battery installations that need proper setup without extra interface hardware.

Victron dc to dc battery charger features

• Output, 17A charge current, 400W, on a 24V to 24V non-isolated topology
• Connectivity, built-in Bluetooth, configured and monitored via VictronConnect on iOS and Android
• Charge algorithm, multi-stage adaptive profile supports AGM, gel, flooded lead-acid and lithium batteries
• Engine detection, monitors input voltage to avoid discharging the starter battery
• Remote on/off, input terminal for integration with vehicle ignition or a BMS
• Non-isolated design, shares a common negative between input and output, simplifying wiring where both battery banks already share a ground

How it works

The Orion-Tr Smart takes power from a vehicle or vessel's primary battery and charges a secondary service battery using a proper multi-stage profile rather than a simple voltage drop. That matters for lithium and AGM batteries, which need accurate charge termination to avoid damage. Being non-isolated, it's suited to the standard arrangement in most 24V vehicle and marine systems where the two banks share a common negative.

All Bluetooth hardware is built into the unit itself, so charge profiles, voltage thresholds and engine detection sensitivity can all be adjusted from the app without extra parts. For lithium setups with a Victron BMS, the remote on/off terminal gives the BMS a direct way to stop charging if cell voltages move outside safe limits.

Applications

Fits dual-battery setups in 24V campervans, motorhomes and HGVs, marine service battery charging from a 24V starter bank, off-grid vehicle builds with lithium service batteries, auxiliary charging in emergency and specialist vehicles, and mobile DC systems where alternator charging supplements solar input.

Installation notes

Fitting should be carried out by a qualified auto-electrician or marine electrician. The non-isolated design needs a shared common negative between source and load batteries, and both input and output cables must be correctly fused. On lithium installations, wire the remote on/off terminal to the BMS so the charger can't run outside safe cell voltage limits.

What's in the box

• Victron Orion-Tr Smart 24/24-17A (400W) Non-Isolated DC-DC Charger